Elevator buckets



(No Model.)

2 Sheets-Sheet l. S. S. STOTT & R. BIR'TWISTLE.

MACHINE FOR MAKING ELEVATOR BUOKETS.

Patented May 26, 1885.

FIG/1. F|G.5.

FIG.6.

(No Model.) 2 Sheets-Sheet 2.

S. S. STOTT & R. BIRTWISTLE. MACHINE FOR MAKING ELEVATOR BUOKBTS.

No. 318,582. Patented-May 26, 1885.

FIG].

llniTnn TaTns PATENT Trish.

SAMUEL STORER STOTT AND RICHARD BIRTXVISTLE, OF HASLINGDEN, COUNTY OFLANCASTER, ENGLAND.

MACHINE FOR MAKING ELEVATOR-BUCiiETS.

SPECIFICATION forming part of Letters Patent No. 318,582, dated May 26,1885.

Application filed March 10, 1855. (No model.) Patented in EnglandJanuary 14, 1885, No. 506.

To aZZ whom it may concern.-

Be it known that we, SAMUEL SroRER Srorr and RICHARD BIRTWIsTLE,subjects of the Queen of Great Britain, both of the firm of S. S.STOT'J. & 00., 0f Haslingden, in the county of Lancaster, England,engineers, have invented a certain new and useful Improvement inMachines for Making ElevatorBuckets, (for which we have obtained apatent in Great Britain, No. 506, bearing date January 14,1885,) ofwhich the following is a specification.

Our invention relates to an improvement in mechanism for striking upbuckets from sheet metal; and it consists of a recessed die,incombination with a draw-plate having two openings, arranged one on eachside of the central recess of the said die, two verticallyslotteddetachable studs. which extend through the said openings of thedraw-plate and screw into the body of the die, transverse tapering cotter-pins which pass through the slots of said studs and clamp saiddraw-plate to said die, and the solid reciprocating die which operatesagainst the sheet of metal that is held by said draw-plate over therecess of the said recessed die, substantially as hereinafter set forthand claimed.

Figure 1 is a front elevation, partly in section, of part of a machinewith a pair of dies (a male and a female) which we employ for blockingor forming the elevator-buckets. Fig. 2 is a plan of the lower part ofthe machine, the draw-plate and the sheet of metal being removed. Fig. 3shows in plan and side view the sheet of metal from which anelevatorbucket is to be formed. Fig. 4 is an end view, Fig. 5 a sideview, and Fig. 6 a plan, of an elevator-bucket blocked in the machineillustrated by Figs. 1 and 2 from the sheet of metal shown in Fig. 3;and Fig. 7 shows five of the different shapes of elevator-buckets whichwe make according toour invention.

Similar letters refer to similar parts through out the several views.

Figs. 1 and 2 illustrate all the essential parts of a machine forperforming the blocking process.

a is part of the frame of the machine, and b the ram or piston,which isfree to slide vertically in the frame a.

c is the male or solid die secured to the ram b, and dis the female dieor hollow block. The pair of dies 0 and d may be of any suitable sizeand shape, according to the kind of elevatorbucket required to beformed.

Round the edges of the hollow recess in the block 01 is a recess, (1,formed to receive the sheet of metal 6. (Shown also in Fig. 3.) Thissheet or plate of metal 0 is out or punched out of a sheet of metal inany convenient manner, and is of any suitable shape or size, accordingto the shape and size required for the elevatorbucket into which it isto be formed. \Vhen the plate 0 has been laid in the recess (2, it ispartially covered by the adjustable draw-plate f, which is placed overit and clamped or secured in its position as firmly as required bydriving the taper cotter-pins g into the slots in the studs h,which arescrewed into the block (Z. The ram b,wl1ich is actuated by hydraulic,steam, or other convenient motive power, is then caused to descend, andthe die 0 forces the plate 0 into the hollow in the block (I, the edgesof the plate being prevented from buckling by the draw-plate f, therebycausing the plate 0 to assume the shape illustrated by Figs.

6, 7 and 8, and producing an elevator-bucket from the solid metal platee without any cutting or riveting, and without any overlapping edges toimpede the free delivery of any substance raised.

In Fig. 7, i, j, 75, Z, and m illustrate some out of the many kinds andshapes of elevatorbuckets which we are enabled to make according to ourinvention by varying the shape and size of the dies and of the metalplates employed. The bucket marked at is shown with its mouth crimped orpuckered, which is sometimes advantageous-as, for instance, where a deepnarrow bucket is required-as additional strength is gained. This resultis obtained either by dispensing with the draw-plate f and making thesheet of metal 0 rather larger than when it is simply required to fillthe hollow in the block d, so that the edge of the plate e may be leftfree to pucker, or by using dies of suitable form constructed speciallyfor this purpose.

In certain cases it may be necessary or desirable to use more than onepair of dies, and also to heat the plates of metal in carrying out theblocking process.

' the body of the die, transverse tapering cotter-pins g,which passthrough the slots of said studs and clamp said draw-plate to said die,and the solid reciprocating die 0, which operates against the sheet ofmetal that is held by said draw-plate over the recess of die d,substantially as set forth.

The foregoing specification of our improvement in the manufacture ofelevator-buckets signed by us this 26th day of February, 1885.

SAMUEL STORER STOTT. RICHARD BIRTWISTLE. Witnesses:

H. B. BARLOW, S. "W. GILLETT.

